It occurs to me that this is a binary search on the alphabet, but could be made into a much more human-compatible format: “Is the letter in the first half of the alphabet?” “Is the letter between A and F?”
I'm not sure that's exactly human friendly. Can people answer questions like that without training? Would the amount of thought needed create a noise signal?
If they have vision, you could ask "Which of these two sets is the letter in", where the sets were dynamically generated by predictive software.
yeah, I guess you'd start with the first 13/last 13 and break it down in halves from there. It would take only 6 choices to pick a letter. I still think memorizing the binary version of the letters would be faster, and wouldn't take all that long considering the amount of use.
If they have vision, you could ask "Which of these two sets is the letter in", where the sets were dynamically generated by predictive software.